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2008-07-21: Change files for tex and friends, shell scripts to build
a Pascal only implementation of TeX.
TeX-bugs fixed:
(1) TeX warns you about an underful box if the last line
of Paragraph contains discardables only. I discovered
this bug while trying to prove the line breaking code.
I reported to Mrs. Beeton. But the checkers didn't seem
to understand my request. They replied: An empty box
triggers the underful box warning as designed.
But this is not, what I questioned. But I do question,
that TeX leaves an empty box as the last line of a
paragraph. At least it should contain the \parfilskip
glue. Well, I fixed it by protecting \parfilskip from
being discarded. By the way, this is one of those bugs
you won't find by testing.
(2) TeX flushes now and then extension and area of input
file names. Igor Liferenko reported this bug on
2020-10-29, more than twelve years later.
2008-09-07: MetaPost, dvips, xdvi, polytonic greek fonts added.
Less than two month suffice for TeX-GPC to grow autonomous:
To typeset, preview and print technical papers containing
figures is all covered by the components of TeX-GPC.
Btw., this turned out to be important for me. The latest
Mac OS version running on my 2009 imac is OS X 11.
MacTeX 2020 runs on 10.15 or newer.
TeX-GPC does buffered write for the dvi file. This
triples the speed. To process tex.tex web2c needed
7.54s, TeX-FPC 11.40s. Speed is important for the
preview-edit cycle.
2010-03-16: The 2nd edition builds and runs on Mac OS 10.2, it includes
a directory "tech" that shows how to construct tex with
the German hyphenation table and the package german
style from Bernd Raichle. Now TeX-GPC contains everything
you need to typeset, preview, and print German books,
as I did! (Helbig: Analysis 0, Ein logischer Einstieg
in die Analysis). When Germans write the word they hear
when Knuth says "TeX" they write "tech".
Now TeX-GPC is compatible to newer versions of GPC as
suggested by Martin Monperrus. Louis Rivera kindly
reported some problems relating to different versions
of the compiler.
Joachim Kuebart reported: If the first input line
contains spaces only, TeX-GPC might loop. In fact TeX-GPC
will not loop since it accidently exploits the fact,
that the memory is zeroed out when initialized by Unix.
But nevertheless it is a bug.
2010-05-26: 2nd edition, first fix: tangle.p forgotten.
Aside from tangle.p the same as above.
2014-06-29: 3rd edition, based on Knuth's dististribution from
Jan. 2014. The change files of this edition are to be
applied to TeX version 3.14159265, MF version 2.7182818.
2015-09-30: Update to macOS 10.11 broke GPC and therefore TeX-GPC
as well. Helpless, sad, hoping for a revival of GPC.
2019-02-22: 1st edition of TeX-FPC. Date fixed at 1776-07-14.
2019-03-04: fixing three bugs of 1st. edition, all reported by Joachim.
The shell script tgl tried to launch good old GPC. An
extra space in tex.ch corrupted the change file. In
tex.ch a '\marke G' waited to be replaced by '\marke X'.
2020-11-25: 2nd edition. All features recreated! Finally arrived the state
of 2008-09-07. Exhausted but happy!
Igor Liferenko reported another bug in TeX: An extra space
is printed in the log file and the last line is not terminated
when the user switched to \batchmode during error recovery.
TeX-FPC fixes both noisances.
Realizing that TeX-FPC is the only pure Pascal distribution,
I decided that my personal preferences are not worthwhile
to clutter up TeX-FPC, since I can reinstall them
whenever I want them. My wishes are: Don't ignore trailing
spaces of input lines, don't ignore leading spaces of
the first input line. Don't print extra empty lines on
the terminal, when entering a file interactively. These
regressions leads us back to IBM's fixed length records
and punching cards, when the user could not control the
length of a line.
future: Bugs that remain to be fixed:
This one-liner loops:
\def\par{\endgroup\par} \def\a#1{#1} \a\par
Whatever you enter during error recovery, you cannot convince
TeX to forgive your faux pas and continue processing the rest
of the file.
2021-02: 3rd edition. Will Senn and Dave Jarvis pointed out some ambiguities
in the README file. I'll took their comments and questions to
improve the wordings in the README file and some of TeX's error
messages.
The minimal installation does not care for the .pk fonts. They will
be created on demand by the dvi drivers. (dvips and xdvi)
2021-04: 4th edition. Joachim found some typos in README and helped to
fix the WEB macros.
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